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Finding the Fourth Proportional to 808,886.40, 1,213,329.60 and 798,388.80

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Solution

The fourth proportional to 808,886.40, 1,213,329.60 and 798,388.80 is: 1,197,583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,886.40 : 1,213,329.60 = 798,388.80 : x
  2. Step 2: Convert to fraction form
    808,886.40/1,213,329.60 = 798,388.80/x
  3. Step 3: Cross multiply
    808,886.40x = 1,213,329.60 × 798,388.80
  4. Step 4: Simplify right side
    808,886.40x = 968,708,763,348.48
  5. Step 5: Solve for x
    x = 968,708,763,348.48/808,886.40
  6. Step 6: Final answer
    x = 1,197,583.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.